Sole-fastening wire



(No Model.)

L. GODDU.

SOLI: FASTENING WIRE.

Patented Sept. 20, 1887.

UNITED STATES PATENT OFFICE.

LOUIS GODDU, OF WINCHESTER, ASSIGNOR TO JAMES IV. BROOKS, PRIN@ CIPALTRUSTEE, OF CAMBRIDGE, AND FRANK F. STANLEY, ASSOCIATE TRUSTEE, OFBOSTON, MASSACHUSETTS.

SOLE-FASTENING WIRE.

SPECIFICATION forming part of Letters Patent No. 370,136, datedSeptember 20, 1887.

Application filed May 21, 1887. Serial No. 238,958. (No model.)

To all whom if may concern,.-

Be it known that I, Louis GODDU, of Winchester, county of Middlesex, andState of Massachusetts, have invented an Improvement in Sole-FasteningIVire, of which the following description, in connection with theaceompanying drawings, is a specification, like letters and figures onthe drawings representing like parts.

In the manufacture of shoes the soles are commonly secured to the upperby means of fastenings cut in measured lengths from a threaded wiretaken from a coil of' wire. This wire as now used is provided with asingle thread of quite short pitch, which is made to enter the stock byrotating the wire, and is then cut off close to the stock. The finer thethread, the greater the number of rotations and the longer the timerequired to screw the wire through the stock, and so,also, the less thepitch of the thread, the slower it is cut in the machine producing thewire. The wire to be useful should be well covered by threads.

In my experiments to cheapen the construction of boots and shoes I havediscovered that a solefastening wire may be provided with two or morethreads of considerable pitch at a very much less cost in time than whenthe wire has but a single thread, as now in use, and as described inUnited States Patent No. 161,842, and it follows that the end of asolefastening wire provided with a multiple thread may be inserted intothe sole or stock at a much greater speed, thus cheapening the cost ofmaking the shoe.

Figure 1 shows a coil of sole-fastening wire having asingle thread thecutting knives are set in the same plane on opposite sides or partsofthe wire, and as the wire has but a single thread it necessarilyfollows that while one knife is cutting between threads the otherknlfeon the opposite slde or part of the wire 1s acting on the edge ofthe thread and bends or turns the said edge over, so that it partiallyfills up the space between the threads on that side or part of the wire.

Asole-f'astening wire having a single thread, and eut as described,offers considerable resistance while entering into the stock, on aecount of the bending or turning of the edge of the thread, as described,and so, also, the holdlng power of the fastening cut from it, whenembedded in the stock, is diminished to aconsiderable degree, owing`tothe injury of the thread at the point where it is cut from the wire,whereas a double or multiple thread af'- fords greater facility for bothknives to cutin the grooves, which always come substantiallydrametrically opposite on the wire, thus obviating injury to the end orpoint next to be inserted into the material.

I claimH As an improved article of manufacture, a sole-fastening wirehaving independent or separate threads, the grooves between the threadsbeing substantially diametrically opposlte, as and for the purposespecified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS GODDU.

Vitnesses:

G. W. GREGORY, B. DEWAE.

